Fig. 12From: Equipment to tag, track and collect biopsies from whales and dolphins: the ARTS, DFHorten and LKDart systemsIn the left panel the DFHorten kit is shown in detail with a speaker, cables for 12Â V connection, the DFHorten unit, and space for an R-1000 receiver (Communication Specialist, Inc., USA). The following panelsshow examples of the directional display of the DFHorten unit. Photo by Lars KleivaneBack to article page